A MANLEY VALVE FOR EVERY APPLICATION CHOOSE FROM ONE OF FIVE SERIES OF STAINLESS VALVES EXHAUST VALVE TEMPERATURE RANGE CHART

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1 1960 SWARTHMORE AVENUE LAKEWOOD, NEW JERSEY STAINLESS A MANLEY VALVE FOR EVERY APPLICATION CHOOSE FROM ONE OF FIVE SERIES OF STAINLESS PERFORMANCE SERIES 3 Stainless Steel ( XH-422 Exhaust and NK-840 Intake ) 3 Stock and.100" Longer Lengths Available STREET SERIES 3 Stainless Steel ( XH-424 Exhaust and NK-841 Intake ) 3 Street Master ( Straight Stem ) and Street Flo Shapes Available RACE SERIES 3 Stainless Steel ( XH-426 Exhaust and NK-842 Intake ) 3 Race Master ( Straight Stem ) and Race Flo Shapes Available 3 Recommended Exhaust Valves for Alcohol Engines SEVERE DUTY SERIES 3 Superior Stainless for High Temperature Gasoline Engines 3 Exhaust Material XH-428 with Double the Ultimate Tensile Strength ( at 1500 F ) over the competition 3 Intake Material NK-844 with 1000 Times Better Fatigue Strength than competitors offerings. EXTREME DUTY SERIES 3 Top Fuel, Funny Car and Marine Engine Exhaust Valves 3 More Hot Hardness and High Temperature Strength than any competitive offerings 3 XH-432 XtremeAlloy EXHAUST VALVE TEMPERATURE RANGE CHART 900 F 1000 F 1100 F 1200 F 1300 F 1400 F 1500 F RACE SERIES SEVERE DUTY SERIES Temperatures at pyrometer 1" in header. EXTREME DUTY SERIES 3

2 STAINLESS MANLEY PERFORMANCE PRODUCTS, INC. PHONE: FAX: Manley Performance is universally acknowledged as the leading manufacturer of performance and racing valves in the world. The reason for Manley s overwhelming success is simple: QUALITY. We offer the best materials in the industry - exclusive materials our competitors do not possess. Our stems are hard coated with.0002" thick chrome rather than a few millionths of flash. Our hard tips are superior to competitors puddled stellite which can crack and erode off the stem. Our valve head and underhead shapes have been in the forefront of the quest for improved flow since the late 1960 s. And always each Manley valve has been price targeted to specific markets to ensure the best possible value to the customer. A P P L I E D S T R E S S K S I SEVERE DUTY EXHAUST VALVE FATIGUE CURVES AT 1400 F 10,000 MANLEY XH-428 COMPETITORS EV-8, 21-4N 100,000 1,000,000 10,000, ,000,000 CYCLES TO FAILURE / ENDURANCE LIMITS EXHAUST VALVE ULTIMATE TENSILE STRENGTH (1500ºF) 70,000 PSI 60,000 PSI 50,000 PSI 40,000 PSI 30,000 PSI MANLEY XH-428 MANLEY XH-426 EV-8 RACE MASTER Race Master, and the Pro Flo versions identified as Race Flo valves, are manufactured of XH-426 material for the exhausts and NK-842 for the intakes. This series of valves is targeted at the bracket, drag and oval track racers operating below 8000 rpm - above which engine speed titanium is required. Any engine builder successfully using EV-8 alloy ( 21-4N ) valves will find in this series of Manley valves a superior piece at a most attractive price. The Ultimate Tensile Strength charts on this page and the next, show the Manley Race Series to be equal to the best that the competitors have to offer. 0.0 PERFORMANCE & STREET SERIES Designed for the enthusiast preparing a stock or mildly modified street engine, or a bracket racer seeking maximum value for his dollar, the Performance or Street Series valves are the perfect choice. These dependable valves are also offered in Street Flo versions providing significant flow gains without head porting. All valves in both these series feature chrome stems, hard tips, swirl polished underhead areas, and fully machined combustion faces. A P P L I E D S T R E S S K S I SEVERE DUTY INTAKE VALVE FATIGUE CURVES AT 1000 F 10,000 MANLEY NK-844 COMPETITORS EV-8, 21-4N 100,000 1,000,000 10,000, ,000,000 CYCLES TO FAILURE / ENDURANCE LIMITS 4

3 1960 SWARTHMORE AVENUE LAKEWOOD, NEW JERSEY STAINLESS SEVERE DUTY The Severe Duty series of valves is the Manley signature in the performance and racing industry. Exhaust material XH-428 and intake material NK-844 is offered by no competitor in the world. And no pair of materials show such clear dominance over all others. Ultimate tensile strength of XH-428 at 1500 F is nearly double the competitors EV-8. At 1000 F the Manley NK-844 displays more than four times the ultimate tensile of the competition s best intake material. The accompanying graph illustrates the complete superiority of our exotic steels over our own XH-428 as well as competitor s EV-8. HOT HARDNESS B.H.M HOT HARDNESS STRENGTH OF MANLEY "EXOTIC" EXHAUST MATERIALS MANLEY XH-430 (INCONEL), XH-432 (XtremeAlloy) INTAKE VALVE ULTIMATE TENSILE STRENGTH (1000ºF) 150,000 PSI 120,000 PSI MANLEY NK MANLEY XH-428 MANLEY XH TEMPERATURE 90,000 PSI 60,000 PSI 30,000 PSI 0.0 MANLEY NK-842 EV-8 Further proof of the superiority of the Manley Severe Duty valves is evident in our comprehensive fatigue tests. In normal operation where valve float is non-existent, a valve will experience 20,000 to 25,000 lbs of applied stress. However, when valves bounce on the seat the stress immediately soars to 40,000 to 60,000 lbs. Manley exhaust valves (at 40,000 psi and 1400 F) ran to 100,000,000 (one hundred million) cycles while competitors offerings failed at 100,000 cycles. That s 1000 times better fatigue life In addition to the vastly superior strength and fatigue characteristics of Manley NK-844, our exclusive intake material exhibits an uncanny ability to resist chordal fractures. In an excellent sealing combustion chamber, the intake valve is actually deformed by the fuel explosion and pushed up into the port. The effect of this continuous deformation on competitors material eventually is a chordal fracture propagating from the circumference of the valve and quickly becoming a missing pie shaped piece. Manley NK-844 is the absolute best choice of material to combat disastrous chordal fractures. EXTREME DUTY Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors will all benefit by the use of Inconel and XtremeAlloy exhaust valves. Exotic steel is required simply because of the enormous heat imposed on the exhaust valves in these applications. The illustration above shows an intake valve seated in the head with normal shape. The right illustration shows the valve being deformed under high combustion pressure. 5

4 STAINLESS MANLEY PERFORMANCE PRODUCTS, INC. PHONE: FAX: THE PRO FLO SHAPE A MANLEY ORIGINAL 3 Up to 40% flow increase in small port OE style cylinder heads 3 Proven performance improvement on the flow bench Test for: Hot Rod Magazine Tests performed by: Edelbrock Type of cylinder head: 1969 Camaro AMOUNT OF INTAKE EXHAUST NET VALVE IMPROVEMENT IMPROVEMENT LIFT IN FLOW IN FLOW.150" 42% 93%.200" 37% 27%.250" 25% 23%.300" 12% 22%.350" 7% 19%.400" 5% 14% AVAILABLE IN THREE SERIES OF Series Street Race Severe Duty Pro Flo Designation Street Flo Race Flo Pro Flo STAINLESS STEEL & TITANIUM VALVE BUYERS GUIDE Valve Type Replacement and Mild Street Performance Engine Builders Using EV-8 High Perf Street Bracket Racers Oval Track Sportsman Racers Naturally Aspirated Alcohol Burning Engines Drag Racing Over 8000 RPM Offshore Powerboat and Hi Performance Marine Sprint Car Dirt Late Model Performance Series Acceptable Street Series Preferred Race Series Extra Insurance Acceptable Preferred Exhaust When Titanium is Not Allowed Not Recommended Severe Duty Preferred Preferred Intake When Titanium is Not Allowed Required Intake Extreme Duty Preferred with Restricted Carburetor Top Fuel Funny Car Exhaust Only Required Exhaust Titanium Preferred Required Other Than Top Fuel or Funny Car Race Only Required 6

5 1960 SWARTHMORE AVENUE LAKEWOOD, NEW JERSEY STAINLESS BUICK V-6 STAGE 1 and PRODUCTION CAST IRON HEADS SEVERE DUTY 3 XH-428 Exhaust Material 3 NK-844 Intake Material 3 Swirl Polished and Machined 3 Intakes are Pro Flo for Improved Flow Exh Stock x 7/16" Dish Int Stock Pro Flo: 12 x 3/8" Dish Int Stock Pro Flo: 12 x 3/8" Dish 97 OLDSMOBILE SEVERE DUTY 3 XH-428 Stainless Exhaust Material 3 NK-844 Stainless Intake Material 3 Hard Tips 3 Swirl Polished 3 Chrome Stems 3 Fully Machined Head Stem Installed O / A Tip Underhead Seat Top of Part No. Type Diameter Diameter Height Length Length Angle / Radius Margin Width Head Exh Stock x 3/8" Dish Int Stock x 3/8" Dish PONTIAC RACE MASTER & RACE FLO 3 XH-426 Stainless Exhaust Material 3 NK-842 Stainless Intake Material Head Stem Installed O / A Tip Underhead Seat Top of Part No. Type Diameter Diameter Height Length Length Angle / Radius Margin Width Head Exh Stock x 3/8" Dish Exh Stock x 3/8" Dish Exh Stock x 3/8" Dish Int Stock Pro Flo 12 x 3/8" Dish Int Stock Pro Flo 12 x 3/8" Dish Valves and fit Edelbrock 72cc cylinder heads. Both intakes have 30 seats. Need a different length? Head diameter not listed? See pages 42 & 43 for Gen II blanks to construct a valve to your exact specifications. 7

6 STAINLESS MANLEY PERFORMANCE PRODUCTS, INC. PHONE: FAX: LS-1 / LS-2 (LS-6 HEAD) SMALL BLOCK CHEVY RACE FLO / RACE MASTER 3 XH-426 Stainless Exhaust Material 3 NK-842 Stainless Intake Material 3 Swirl Polished and Machined 3 Intakes are Pro Flo for Improved Flow 3 O.E. Style Radius Keeper Grooves Part No. Type Diam. Diameter Height Length Length Angle / Radius Margin Width Head Grams Exh Stock x 7/16" Dish Exh Stock x 7/16" Dish Exh Stock x 7/16" Dish Int Stock Pro Flo: 12 x 3/8" Dish H-8 Int Stock Pro Flo: 12 x 3/8" Dish 91 Hollow Stem Int Stock Pro Flo: 12 x 3/8" Dish H-8 Int Stock Pro Flo: 12 x 3/8" Dish 93 Hollow Stem Int Stock Pro Flo: 12 x 3/8" Dish H-8 Int Stock Pro Flo: 12 x 3/8" Dish 94 Hollow Stem Int Stock Pro Flo: 12 x 3/8" Dish H-8 Int Stock Pro Flo: 12 x 3/8" Dish 95 Hollow Stem Int Stock Pro Flo: 12 x 3/8" Dish H-8 Int Stock Pro Flo: 12 x 3/8" Dish 97 Hollow Stem SEVERE DUTY / PRO FLO 3 XH-428 Stainless Exhaust Material 3 NK-844 Stainless Intake Material 3 Swirl Polished and Machined 3 Intakes are Pro Flo for Improved Flow 3 O.E. Style Radius Keeper Grooves NEW Part No. Type Diam. Diameter Height Length Length Angle / Radius Margin Width Head Grams Exh Stock x 7/16" Dish Exh Stock x 7/16" Dish Exh Stock x 7/16" Dish Int Stock Pro Flo: 12 x 3/8" Dish H-8 Int Stock Pro Flo: 12 x 3/8" Dish 95 Hollow Stem Int Stock Pro Flo: 12 x 3/8" Dish H-8 Int Stock Pro Flo: 12 x 3/8" Dish 96 Hollow Stem Int Stock Pro Flo: 12 x 3/8" Dish H-8 Int Stock Pro Flo: 12 x 3/8" Dish 98 Hollow Stem EXTREME DUTY EXHAUST 3 XH-432 XtremeAlloy Material 3 Swirl Polished and Machined NEW Part No. Type Diam. Diameter Height Length Length Angle / Radius Margin Width Head Grams Exh Stock x 7/16" Dish Exh Stock x 7/16" Dish 92 8

7 1960 SWARTHMORE AVENUE LAKEWOOD, NEW JERSEY STAINLESS LS-3 / L-99 (L-92 HEAD) SMALL BLOCK CHEVY RACE FLO / RACE MASTER 3 XH-426 Stainless Exhaust Material 3 NK-842 Stainless Intake Material 3 Swirl Polished and Machined 3 Intakes are Pro Flo for Improved Flow 3 O.E. Style Radius Keeper Grooves Part No. Type Diam. Diameter Height Length Length Angle / Radius Margin Width Head Grams Exh Stock x 7/16" Dish Int Stock Pro Flo: 12 x 3/8" Dish H-8 Int Stock Pro Flo: 12 x 3/8" Dish 108 Hollow Stem SEVERE DUTY / PRO FLO 3 XH-428 Stainless Exhaust Material 3 NK-844 Stainless Intake Material 3 Swirl Polished and Machined 3 Intakes are Pro Flo for Improved Flow 3 O.E. Style Radius Keeper Grooves NEW Part No. Type Diam. Diameter Height Length Length Angle / Radius Margin Width Head Grams Exh Stock x 7/16" Dish Int Stock Pro Flo: 12 x 3/8" Dish H-8 Int Stock Pro Flo: 12 x 3/8" Dish 109 Hollow Stem EXTREME DUTY EXHAUST 3 XH-432 XtremeAlloy Material 3 Swirl Polished and Machined NEW Part No. Type Diam. Diameter Height Length Length Angle / Radius Margin Width Head Grams Exh Stock x 7/16" Dish 94 LS-7 SMALL BLOCK CHEVY SEVERE DUTY / PRO FLO 3 XH-428 Stainless Exhaust Material 3 NK-844 Stainless Intake Material 3 Swirl Polished and Machined 3 Intakes are Pro Flo for Improved Flow 3 O.E. Style Radius Keeper Grooves NEW Part No. Type Diam. Diameter Height Length Length Angle / Radius Margin Width Head Grams Exh Stock x 7/16" Dish Int Stock Pro Flo: 12 x 3/8" Dish H-8 Int Stock Pro Flo: 12 x 3/8" Dish 110 Hollow Stem EXTREME DUTY EXHAUST 3 XH-432 XtremeAlloy Material 3 Swirl Polished and Machined NEW Part No. Type Diam. Diameter Height Length Length Angle / Radius Margin Width Head Grams Exh Stock x 7/16" Dish 103 9

8 STAINLESS MANLEY PERFORMANCE PRODUCTS, INC. PHONE: FAX: SMALL BLOCK CHEVROLET BUDGET REPLACEMENT 3 XH-422 Stainless Exhaust Material 3 NK-840 Stainless Intake Material 3 Original Underhead Shapes and Finishes Exh Stock Stock Dimple Exh Stock Stock Dimple Int Stock Stock Dimple Int Stock Stock Flat Face 117 SMALL BLOCK CHEVROLET BUDGET PERFORMANCE 3 XH-422 Stainless Exhaust Material 3 NK-840 Stainless Intake Material Exh Stock x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Int Stock x 3/8" Dish Int Stock x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish

9 1960 SWARTHMORE AVENUE LAKEWOOD, NEW JERSEY STAINLESS SMALL BLOCK CHEVROLET STREET FLO 3 XH-424 Stainless Exhaust Material 3 NK-841 Stainless Intake Material 3 Increased Flow with Pro Flo Underhead Exh Stock Pro Flo: 12 x 3/8" Dish Exh Stock Pro Flo: 12 x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish 109 The will work on the new Chevy Vortec Bowtie cylinder head casting number IC and IC. See page 3 for a description of our valve materials. SMALL BLOCK CHEVROLET STREET MASTER 3 XH-424 Stainless Exhaust Material 3 NK-841 Stainless Intake Material 3 Straight Stems Exh Stock x 1/2" Dish Exh Stock x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Int Stock x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish 112 The will work on the new Chevy Vortec Bowtie cylinder head casting number IC and IC. See page 3 for a description of our valve materials. 11

10 STAINLESS MANLEY PERFORMANCE PRODUCTS, INC. PHONE: FAX: SMALL BLOCK CHEVROLET RACE FLO 3 XH-426 Stainless Exhaust Material 3 NK-842 Stainless Intake Material 3 Increased Flow with Pro Flo Underhead Exh Stock Pro Flo: 12 x 3/8" Dish Exh Stock Pro Flo: 12 x 3/8" Dish Exh Stock Pro Flo: 12 x 3/8" Dish Exh Longer Pro Flo: 15 x 1/2" Dish Exh Longer Pro Flo: 15 x 1/2" Dish Exh Longer Pro Flo: 15 x 1/2" Dish Exh Longer Pro Flo: 15 x 1/2" Dish Exh Longer Pro Flo: 15 x 1/2" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Stock Pro Flo: 12 x 3/8" Dish Int Stock Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Stock Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Stock Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish 120 Exhaust valves 11501, 11521, 11565, and intake valves 11500, 11522, 11566, and have a Pro Flo start 1.400" from the head. All others have a Pro Flo start of 1.600" from the head. See page 3 for a description of our valve materials. Note: New part numbers are ITALICIZED. Need a different length? Head diameter not listed? See pages 42 & 43 for Gen II blanks to construct a valve to your exact specifications. 12

11 1960 SWARTHMORE AVENUE LAKEWOOD, NEW JERSEY STAINLESS SMALL BLOCK CHEVROLET RACE MASTER 3 XH-426 Stainless Exhaust Material 3 NK-842 Stainless Intake Material 3 Straight Stems Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish 138 See page 3 for a description of our valve materials. Need a different length? Head diameter not listed? See pages 42 & 43 for Gen II blanks to construct a valve to your exact specifications. 13

12 STAINLESS MANLEY PERFORMANCE PRODUCTS, INC. PHONE: FAX: SMALL BLOCK CHEVROLET RACE MASTER 5/16" (.311" ) STEM 3 No Need for Inserted Tips or Wear Caps 3 XH-426 Stainless Exhaust Material 3 NK-842 Stainless Intake Material 3 Thin Stem for Increased Flow and Light Weight These.311" stem valves are ONLY available with Bead Loc keeper grooves. Bead Loc valve locks are REQUIRED Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish 113 Dodge 5.9 L, 360 CID Magnum Series engines can use exhaust valves and intake valves with aftermarket locks and retainers. RPMS AND THIN STEM Use of the thin stem valves listed on pages 14, 15, and 25 will enable an engine to achieve higher rpm levels. Strict vigilance must be maintained to keep the engine from rpm s that cause valve float. When valves float ( bounce on the seat ) the stresses rapidly increase and the fatigue life of the valves is dramatically reduced. These valves are heavier than titanium and require additional spring pressure to operate at comparable rpm ranges. To help the engine avoid a valve float condition, purchase - and maintain - the best valve springs available. Use lightweight titanium retainers and titanium valve locks. Use quality pushrods. Operate the engine within predetermined rpm limits. ROCKERS AND THIN STEM When using Chevrolet valves with stem sizes 5/16" or less in diameter as listed on pages 14, 15 and 25, it is advised to use a shaft type rocker which keeps the rocker tip basically centered on the valve. If increased tip area is needed, utilize a wear cap, but be cognizant of the fact that the cap adds to the weight of the valve train thus reducing the rpm potential of the engine. Note: New part numbers are ITALICIZED. Need a different length? Head diameter not listed? See pages 42 & 43 for Gen II blanks to construct a valve to your exact specifications. 14

13 1960 SWARTHMORE AVENUE LAKEWOOD, NEW JERSEY SMALL BLOCK CHEVROLET SEVERE DUTY 5/16" (.311" ) STEM 3 No Need for Inserted Tips or Wear Caps 3 XH-428 Stainless Material 3 NK-844 Stainless Intake Material 3 Thin Stem for Increased Flow and Light Weight Hollow.311" stem Gen II blank P/N 11224H can be found on page 42 to support your custom requirements. STAINLESS These.311" stem valves are ONLY available with Bead Loc keeper grooves. Bead Loc valve locks are REQUIRED Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish H-8 Int Longer x 3/8" Dish 98 Hollow Stem Int Longer x 3/8" Dish H-8 Int Longer x 3/8" Dish 100 Hollow Stem Int Longer x 3/8" Dish H-8 Int Longer x 3/8" Dish 100 Hollow Stem Int Longer x 3/8" Dish H-8 Int Longer x 3/8" Dish 101 Hollow Stem See page 14 for information about rpm limitations and rocker arms. SMALL BLOCK CHEVROLET SEVERE DUTY 7 mm (.274" ) STEM 3 No Need for Inserted Tips or Wear Caps 3 XH-428 Stainless Material 3 NK-844 Stainless Intake Material 3 Thin Stem for Increased Flow and Light Weight These.274" stem valves are ONLY available with Bead Loc keeper grooves. Bead Loc valve locks are REQUIRED Exh Longer x 1/2" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish 100 See page 14 for information about rpm limitations and rocker arms. Need a different length? Head diameter not listed? See pages 42 & 43 for Gen II blanks to construct a valve to your exact specifications. Note: New part numbers are ITALICIZED. 15

14 STAINLESS MANLEY PERFORMANCE PRODUCTS, INC. PHONE: FAX: SMALL BLOCK CHEVROLET SEVERE DUTY EXHAUST 3 XH-428 Stainless Material 3 Chrome Stems 3 Hard Tips 3 Swirl Polished 3 Fully Machined Exh Stock x 3/8" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Stock x 3/8" Dish Exh Stock x 3/8" Flat Face Exh Longer x 3/8" Dish Exh Longer x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Stock x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish 122 See page 3 for a description of our valve materials. Need a different length? Head diameter not listed? See pages 42 & 43 for Gen II blanks to construct a valve to your exact specifications. 16

15 1960 SWARTHMORE AVENUE LAKEWOOD, NEW JERSEY STAINLESS SMALL BLOCK CHEVROLET SEVERE DUTY INTAKE 3 NK-844 Stainless Material 3 Chrome Stems 3 Hard Tips 3 Swirl Polished 3 Fully Machined Want a hollow stem Severe Duty intake? It s as easy as Refer to Gen II blank P/N 11254H on page 42 to support your custom requirements Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Stock x 3/8" Flat Face Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Flat Face Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish 137 See page 3 for a description of our valve materials. Need a different length? Head diameter not listed? See pages 42 & 43 for Gen II blanks to construct a valve to your exact specifications. Note: New part numbers are ITALICIZED. 17

16 STAINLESS MANLEY PERFORMANCE PRODUCTS, INC. PHONE: FAX: SMALL BLOCK CHEVROLET SEVERE DUTY PRO FLO 3 XH-428 Stainless Exhaust Material 3 NK-844 Stainless Intake Material 3 Improved Flow with Pro Flo Underhead Exh Stock Pro Flo: 12 x 3/8" Dish Exh Longer Pro Flo: 12 x 3/8" Dish Int Stock Pro Flo: 12 x 3/8" Dish Int Stock Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Stock Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Stock Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish Int Longer Pro Flo: 12 x 3/8" Dish 121 SMALL BLOCK CHEVROLET SEVERE DUTY LEGAL NHRA SUPER STOCK 3 XH-428 Stainless Exhaust Material 3 NK-844 Stainless Intake Material Exh Stock x 3/8" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish

17 1960 SWARTHMORE AVENUE LAKEWOOD, NEW JERSEY STAINLESS SMALL BLOCK CHEVROLET EXTREME DUTY EXHAUST 3 XH-432 XtremeAlloy Material Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish 113 See page 3 for a description of our valve materials. 409 CHEVROLET RACE MASTER 3 XH-426 Stainless Exhaust Material 3 NK-842 Stainless Intake Material 3 Straight Stems Head Stem Installed O/A Tip Underhead Seat Top of Wgt/ Part No. Type Diameter Diameter Height Length Length Angle/Radius Margin Width Head Grams Exh Stock x 1/2" Dish Exh Stock x 1/2" Dish Int Stock x 3/8" Dish Int Stock x 3/8" Dish 141 Need a different length? Head diameter not listed? See pages 42 & 43 for Gen II blanks to construct a valve to your exact specifications. 19

18 STAINLESS MANLEY PERFORMANCE PRODUCTS, INC. PHONE: FAX: BIG BLOCK CHEVROLET STREET FLO STOCK 3/8" STEM DIAMETERS 3 XH-424 Stainless Exhaust Material 3 NK-841 Stainless Intake Material 3 Improved Flow with Pro Flo Underhead Head Stem Installed O/A Tip Underhead Seat Top of Wgt/ Part No. Type Diameter Diameter Height Length Length Angle/Radius Margin Width Head Grams Exh Stock Pro Flo: 10 x 3/8" Dish Exh Stock Pro Flo: 10 x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish 138 BIG BLOCK CHEVROLET RACE FLO STOCK 3/8" STEM DIAMETER 3 XH-426 Stainless Exhaust Material 3 NK-842 Stainless Intake Material 3 Improved Flow with Pro Flo Underhead Head Stem Installed O/A Tip Underhead Seat Top of Wgt/ Part No. Type Diameter Diameter Height Length Length Angle/Radius Margin Width Head Grams Exh Stock Pro Flo: 10 x 3/8" Dish Exh Stock Pro Flo: 10 x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish

19 1960 SWARTHMORE AVENUE LAKEWOOD, NEW JERSEY STAINLESS BIG BLOCK CHEVROLET RACE MASTER STOCK 3/8" STEM DIAMETER 3 XH-426 Stainless Exhaust Material 3 NK-842 Stainless Intake Material Head Stem Installed O/A Tip Underhead Seat Top of Wgt/ Part No. Type Diameter Diameter Height Length Length Angle/Radius Margin Width Head Grams Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish 158 See page 3 for a description of our valve materials. BIG BLOCK CHEVROLET SEVERE DUTY STOCK 3/8" STEM DIAMETERS 3 XH-428 Stainless Exhaust Material 3 NK-844 Stainless Intake Material Want a hollow stem Severe Duty intake? It s as easy as Refer to Gen II blank P/N 11252H on page 42 to support your custom requirements. Head Stem Installed O/A Tip Underhead Seat Top of Wgt/ Part No. Type Diameter Diameter Height Length Length Angle/Radius Margin Width Head Grams Exh Stock x 3/8" Dish Exh Longer x 3/8" Dish Exh Stock x 3/8" Dish Exh Longer x 3/8" Dish Exh Stock x 3/8" Dish Exh Longer x 3/8" Dish Exh Stock x 3/8" Dish Exh Longer x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Stock x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Stock x 3/8" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish 171 See page 3 for a description of our valve materials. 21

20 STAINLESS MANLEY PERFORMANCE PRODUCTS, INC. PHONE: FAX: BIG BLOCK CHEVROLET SEVERE DUTY PRO FLO STOCK 3/8" STEM DIAMETERS 3 XH-428 Stainless Exhaust Material 3 NK-844 Stainless Intake Material 3 Improved Flow with Pro Flo Underhead Want a hollow stem Severe Duty intake? It s as easy as Refer to Gen II blank P/N 11252H on page 42 to support your custom requirements. Head Stem Installed O/A Tip Underhead Seat Top of Wgt/ Part No. Type Diameter Diameter Height Length Length Angle/Radius Margin Width Head Grams Exh Stock Pro Flo: 10 x 3/8" Dish Exh Stock Pro Flo: 10 x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish 171 See page 3 for a description of our valve materials. BIG BLOCK CHEVROLET EXTREME DUTY & MARINE STOCK 3/8" STEM DIAMETERS 3 XH-432 XtremeAlloy Exhaust Material 3 NK-844 Intake Material Want a hollow stem Severe Duty intake? It s as easy as Refer to Gen II blank P/N 11252H on page 42 to support your custom requirements. Part No. Type Head Diameter Stem Diameter Installed Height O/A Length Tip Length Underhead Angle/Radius Margin Seat Width Top of Head Wgt/ Grams Exh. Exh Stock.100 Longer x 3/8" 10 x 3/8" Dish 6 Dish Exh Stock x 3/8" Dish Exh Longer x 3/8" Dish Exh Longer x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Stock x 3/8" Dish Int Stock Pro Flo: 10 x 3/8" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Stock x 3/8" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish Int Longer Pro Flo: 12 x 7/16" Dish 171 See page 3 for a description of our valve materials. 22

21 1960 SWARTHMORE AVENUE LAKEWOOD, NEW JERSEY BIG BLOCK CHEVROLET RACE MASTER 11/32" STEM DIAMETER STAINLESS 3 XH-426 Stainless Exhaust Material 3 NK-842 Stainless Intake Material 3 11/32" Stems for Improved Flow, Lighter Weight Head Stem Installed O/A Tip Underhead Seat Top of Wgt/ Part No. Type Diameter Diameter Height Length Length Angle/Radius Margin Width Head Grams Exh Stock x 3/8" Dish Exh Stock x 3/8" Dish Exh Longer x 3/8" Dish Exh Longer x 3/8" Dish Exh Stock x 3/8" Dish Exh Stock x 3/8" Dish Exh Longer x 3/8" Dish Exh Longer x 3/8" Dish Exh Stock x 3/8" Dish Exh Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish 147 BIG BLOCK CHEVROLET SEVERE DUTY 11/32" STEM DIAMETERS 3 XH-428 Stainless Exhaust Material 3 NK-844 Stainless Intake Material Head Stem Installed O/A Tip Underhead Seat Top of Wgt/ Part No. Type Diameter Diameter Height Length Length Angle/Radius Margin Width Head Grams Exh Stock x 3/8" Dish Exh Longer x 3/8" Dish Exh Longer x 3/8" Dish Exh Stock x 3/8" Dish Exh Longer x 3/8" Dish Exh Longer x 3/8" Dish Exh Stock x 3/8" Dish Exh Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish

22 STAINLESS MANLEY PERFORMANCE PRODUCTS, INC. PHONE: FAX: BIG BLOCK CHEVROLET EXTREME DUTY & MARINE 11/32" STEM DIAMETERS 3 XH-432 XtremeAlloy Exhaust Material 3 NK-844 Stainless Intake Material 3 Reduced Stem Diameter 3 Greater Flow and Less Weight Head Stem Installed O/A Tip Underhead Seat Top of Wgt/ Part No. Type Diameter Diameter Height Length Length Angle/Radius Margin Width Head Grams Exh Stock x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Stock x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish Exh Stock x 1/2" Dish Exh Stock x 1/2" Dish Exh Longer x 1/2" Dish Exh Longer x 1/2" Dish 140 Gen II blank P/N is also available with an 18 back angle, flat face (no dish). Refer to page Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Stock x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish 152 BIG BLOCK CHEVROLET BRODIX BB-4/SAR, EDELBROCK VICTOR CHEVROLET # HEADS SEVERE DUTY 11/32" STEMS 3 XH-428 Stainless Exhaust Material 3 NK-844 Stainless Intake Material Head Stem Installed O/A Tip Underhead Seat Top of Wgt/ Part No. Type Diameter Diameter Height Length Length Angle/Radius Margin Width Head Grams Exh Longer x 3/8" Dish Exh Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish Int Longer x 3/8" Dish 150 Note: New part numbers are ITALICIZED. 24